result of Pix is never more precise than double

3 results were exact to double the precision

20 largest ulp errors (stored in a double)
   0.50000 ulp for Pix(-0.40249991160122217) = -1.2644907653569408)
   0.50000 ulp for Pix(-0.859377740199323) = -2.6998147952687912)
   0.50000 ulp for Pix(-0.19372093860024178) = -0.60859227755303891)
   0.50000 ulp for Pix(-0.58755558299339494) = -1.8458603031077174)
   0.50000 ulp for Pix(0.29726143960305534) = 0.93387435485248471)
   0.50000 ulp for Pix(0.14359627019891205) = 0.45112098753979707)
   0.50000 ulp for Pix(0.87853474180035884) = 2.7599982907634129)
   0.50000 ulp for Pix(-0.62028654459358024) = -1.9486876516157892)
   0.50000 ulp for Pix(-0.16034543119946287) = -0.50374002869292012)
   0.50000 ulp for Pix(0.078860252200420797) = 0.24774678897308028)
   0.50000 ulp for Pix(0.9479476970008327) = 2.9780655208851794)
   0.50000 ulp for Pix(-0.034972605400250441) = -0.10986968020232152)
   0.50000 ulp for Pix(0.29019680059729486) = 0.91168013685172367)
   0.50000 ulp for Pix(0.29415766839919233) = 0.92412357004000512)
   0.50000 ulp for Pix(-0.13784236500043559) = -0.43304456123881124)
   0.50000 ulp for Pix(-0.6969514969998416) = -2.1895377028831109)
   0.50000 ulp for Pix(-0.4778251382005354) = -1.5011319438713298)
   0.50000 ulp for Pix(-0.68105881540210245) = -2.1396093711298119)
   0.50000 ulp for Pix(0.81073511840250845) = 2.5469994919805719)
   0.50000 ulp for Pix(-0.31825036359945036) = -0.9998130042863137)

<tr><td align=left><a href=Pix.res>Pix</a></td><td align=right>720</td><td align=right>0.50000</td><td>-0.40249991160122217</td><td>-1.2644907653569408</td></tr>